CARDUACEAE. 395 



of Clear Creek ; Rabbit-Ears, Larimer Co. ; summit of North Park Range, 

 Routt Co. 



i8. Senecio semiamplexicaulis Rydb. In meadows from Mont, and Ida. to 

 Colo, and Utah. — Foot of Mt. Richtofen on the Michigan ; Chambers' Lake. 



19. Senecio rapifolius Nutt. In the mountains from S. D. and Ida. to 

 Colo. — Alt. 7500-8500 ft. — Andrews' Shetland ranch; Bosworth's ranch, Stove 

 Prairie; mountains, Larimer Co. 



20. Senecio hydrophilus Nutt. In shallow water and swampy ground from 

 Mont, to Colo, and Nev. — Alt. about 8000 ft. — Grizzly Creek, North Park ; 

 Montrose ; six miles above Wolcott ; swampy places near Yampa ; Upper 

 Laramie River; North Fork, Larimer Co. 



21. Senecio integerrimus Nutt. In valleys from S. D. to Neb. and Colo. — 

 Alt. 5000-10,000 ft. — Wolcott, Eagle Co. ; mountain near Veta Pass ; head- 

 waters of Sangre de Cristo Creek; Owl Canon, Larimer Co. 



22. Senecio Hookeri A. Gray. In the mountains from Alb. and B. C. to 

 Colo. — Alt. 8500-9500 ft. — Eldora to Baltimore. 



23. Senecio dispar A. Nels. In mountain valleys of Wyo. and Colo. — Steam- 

 boat Springs. 



24. Senecio Flintii Rydb. Hills of southwestern Colo. — Exact locality not 

 given. 



25. Senecio columbianus Greene. (S. lugens A. Gray, mainly; not Richard- 

 son; 5". atriapiculatus Rydb.) In valleys from Sask. and Alaska to Minn, 

 and Colo. — Alt. 5000-13,000 ft. — Hills southeast of La Veta; Calhan ; Ojo; 

 Tennessee Pass ; Veta Mountain ; Sangre de Cristo Creek ; Rist Cafion ; 

 Horsetooth Gulch ; gulch west of Soldier Canon ; Horsetooth Mountain ; 

 Gray's Peak; headwaters of Clear Creek; Los Pinos. 



26. Senecio perplexus A. Nels. In mountain valleys from Wyo. and Ida. 

 to Colo. — Alt. 8000-10,500 ft. — Robinson; Ojo; Chicken Creek, west of Mt. 

 Hesperus ; Mt. Harvard ; Veta Mountain ; headwaters of Sangre de Cristo 

 Creek; Bob Creek, west of Mt. Hesperus; Cimarron; Eldora to Baltimore; 

 Boulder ; Horsetooth Gulch ; Horsetooth Mountain ; Gore Pass ; Lake City. 



27. Senecio anacletus Greene. (S. Toluccanus microdontus A. Gray; 5". 

 microdontus Heller) In valleys from Colo, to N. M. and Ariz. ; also in Mex. 

 — Alt. 8000-11,000 ft. — Mt. Harvard; Veta Mountain; Dolores; Redcliffe; 

 headwaters of Pass Creek ; Tennessee Pass ; Little Kate Mine, La Plata Moun- 

 tains; Hematite; mountains north of Dolores; Leroux Parks; Silverton; 

 Beaver Creek ; headwaters of Clear Creek. 



28. Senecio atratus Greene. {S. lugens foliosiis A. Gray) In the moun- 

 tains of Colo. — Alt. 7500-13,000 ft. — West of Ouray; Red Mountain road, 

 south of Ouray; Ragged Mountain; vicinity of Como; West Spanish Peak; 

 La Plata Cafion; Ward; mountains above Ouray; Marshall Pass; Como, 

 South Park ; Georgetown ; Mt. Princeton ; Mt. Harvard ; Eldora to Balti- 

 more ; between Sunshine and Ward ; Berthoud Pass ; Marshall Pass ; Clear 

 Creek Caiion, above Georgetown ; Como ; Silverton ; mountain sides near Em- 

 pire; Lake City. 



29. Senecio milliflorus Greene. In the mountains of Colo. — Pagosa Springs. 



30. Senecio Purshianus Nutt. (S. caniis A. Gray, in part; not Hook.) In 

 the mountains from Sask. and B. C. to Tex. and Utah. — Alt. 6000-13,000 ft. — 

 Mountain northeast of Boreas ; Rabbit-Ears, Larimer Co. 



